So I got this notification about new version of /e/. After reboot however it said
ERROR: recovery: failed to verify whole-file signature
Signature verification failed
error: 21
Is this something devs can fix or it’s a problem on my Galaxy S10?
Fairphone 3+
FP3
Upgrade from v1.20-s-stable to v1.21-t-stable
Not rooted
Update straightforward and completed in just 30 minutes, 5 minutes quicker than for a normal update despite download taking longer.
Initial testing of basic functions & apps shows these appearing to be working fine: wi-fi, mobile data, bluetooth, GPS, phone, message, mail, browser, camera, app lounge and various other apps.
The big improvement for me is that my long-standing issue of no automatic VPN re-connection appears to be resolved. Once I’ve done further testing I’ll update the GitLab issue I raised a year ago now!
Just two issues found so far:
-
One app which I usually have force stopped (to stop it searching for wi-fi networks without my knowledge) is now restarting each reboot.
-
I can’t play any audio or video on VLC at the moment, I’m getting a ‘Multiple media cannot be played’ message each time I try. Edit: I’ve now fixed this by enabling VLC access to all files in phone settings menu under: Privacy / Permission manager / Files / ‘See more apps that can access all files’. I assume this permission was lost in the upgrade.
Other than these it’s looking very good, thanks again for all the good work.
3 Likes
Just a guess: Were you installing it manually or OTA? If it was manually, I got an error: 21 myself a while ago (on a Fairphone 3) and my mistake back then was that I used a wrong file (wrong source: images.ecloud.global … right source: ota.ecloud.global …):
Same with my S7, thanks again! 
2 Likes
Vendor Name : Fairphone
Device name : Fairphone 4
Device CodeName : FP4
Version of /e/OS or Stock which existed previously : 1.20-S (Stable)
Is the device Rooted / Not rooted: Not Rooted
For both devices (my wife and me), everything’s perfect after a few days.
Hope next time will be Android T (13) upgrade 
Vendor Name : Gigaset
Device name : Gigaset 290
Device CodeName : GS290
Version of /e/OS or Stock which existed previously : 1.20-S (Stable)
Is the device Rooted / Not rooted: Not Rooted
It’s my daughter’s phone. Here also, all is good. No issue so far.
Thank you very much! 
- Vendor: /e/
- Device name Fairphone
- Device CodeName Fairphone 3
- Version of /e/OS or Stock which existed previously 1.20 (latest available)
- device Not rooted
The update was smooth. The update was time wise as much as a non-version upgrade (about 30 min).
So far all seems to work as expected. Including fingerprint and authentication in banking apps (tested dkb and gls).
The screen resolution changed to smaller but I actually really like it.
Thank you for the great work!!
3 Likes
Thanks @piero, your solution worked for me, although with some detours I’d like to elaborate, because I’m not that familiar with Android debugging and spent quite some time learning all the steps and commands.
Bugs
- Updating from v1.20 to 1.21 crashed my wifi + bluetooth. After activating them, they were automatically deactivated a few seconds later. A simple “Factory reset” and restarting the smartphone did not fix the problem.
- When I tried to flash back the v1.20 image the first time, I also got the “can’t load Android system. Your data may be corrupted…”. Then I fiddled around a bit and somehow it worked when I flashed it another time. Not sure what the fix was, but I tried to recall and summarize my steps below.
My Solution
On the Smartphone:
- Open the “Recovery Menu” as described above. There was no “Install from internal storage” option in “Apply Update”, so I had to do it the “adb” way.
- Factory Reset (not sure if this fixed anything, but since I did it this way and I somehow got it running, so I left it here)
- Format data/factory reset
- Format cache partition
- Advanced > Enable ADB
- Apply Update > Apply from ADB > Now “ADB Sideload” should be displayed
On PC:
- Install the “adb” command line tool and download the murena installation image zip like pointed out by @piero.
- Open a shell and run “adb devices” (you should see a “sideload” device).
- Execute the command “adb sideload path/to/murena/image.zip” (strangely it only loaded to 47% and then printed an error, but it seems to have worked anyway)
- As mentioned above, you may have to try the installation a second time to get it to work.
My device
Vendor Name: Murena
Device Name: MurenaOne
Previous Version of /e/OS: 1.20
Rooted: No
Hope this helps.
1 Like
even if you downloaded the file on the phone ?
this is expected displayed in the terminal followed by “adb: failed to read command: No error”
“No error” must be considered as a sucess
Same as @dfbrem : wifi won’t connect since the 1.21-r update (my G5 is rooted though).
I pushed the murena image via “adb” to the root folder of the internal storage, another time to the “Download” folder, but in both cases only the “adb” option appeared to “Apply Updates”. So, I did not download the image because my wifi was not working, but I think the way the image is obtained is not relevant.
1 Like
System update files might be downloaded to a different partition which doesn’t have enough remaining space.
This is just a guess, you might try to check the Updater if there are still old updates which can be deleted.
Old system update files will remain if updates are not deleted after the installation, see Updater settings (‘Updates nach Installation löschen’):
1 Like
even if you downloaded the file on the phone ?
this is expected displayed in the terminal
Vendor Name: Fairphone
Device name: Fairphone 3
Device CodeName: FP3
Version of /e/OS or Stock which existed previously: v1.20-s-stable to v1.21-t-stable
Is the device Rooted / Not rooted not rooted
Some Apps, e.g. DAVx5 or DWD Warnwetter shows me multiple times, that they have no network connection. After two days a lot of notifications come on my phone and all Apps work fine…
Hi, somehow the upgrade to T is not showing up in my Murena Fairphone 3+. Any ideas why?
EDIT: Solution was to first update to v.1.20 - then the upgrade to 1.21 immediately showed up. Thanks for the hint @mihi
Upgrade went smoithly! Thanks a lot to the /e/ Team!
Vendor Name: Fairphone
Device name: Fairphone 3+
Device CodeName: FP3+
Version of /e/OS or Stock which existed previously: v1.19-s-stable to v1.21-t-stable
Is the device Rooted / Not rooted not rooted
Thanks for any suggestion!
Update 4 April: The team will be releasing a v1.21.2 build for the Murena one which will have a patch for the no wifi issue. Will share the ETA for this release.
The build specific for the Murena one has been released. Read the complete details here
4 Likes
The reason might be that it is only offered when on v1.20…
Atleast when you check the other users with FP3, their previous version was v1.20.
I guess OTA Upgrade is developed for a certain base version
3 Likes
Vendor Name: Fairphone
Device name: FP3
Device CodeName: FP3
Previous Version of /e/OS: 1.20-s (stable)
Rooted: No
OTA Version Upgrade to 1.21-t.
I can send SMS messages, but not receive them anymore
Edit: I am using dual sim, but after popping the secondary one I am still not receiving texts (that should arrive on the primary one)
UPDATE: After waiting for a while, the messages came through and now new messages appear immediately. Not sure what happened but all seems fine now.
No problem sending and receiving sms on my FP3.
Vendor Name : Fairphone
Device name : FP3
Device CodeName
Version of /e/OS or Stock which existed previously : 1.20-s
Is the device Rooted / Not rooted : not rooted
After two days of update, an old bug appear : “Unable to open the camera. Still use by another app? ID:0”
- Vendor Name - Google
- Device name - Pixel 6 Pro
- Device CodeName- Raven
- Version of /e/OS or Stock which existed previously - GrapheneOS
- Is the device Rooted/Not rooted - Not rooted
All appears to be working well. Thank you team for your hard work as always.